CVE-2026-82817Public exploitNetwork attack vector

Cross-tenant privilege escalation via unchecked tenantId

Published Aug 31, 2026 · Updated Sep 2, 2026

Improper access control in Diboot 3.8.0 allows remote authenticated users to cross tenant boundaries through its administrator API. The /admin/ Tenant Administrator Management API accepts a caller-supplied tenantId without verifying that the authenticated account is authorized for the referenced tenant. Low-privilege API access is required, after which requests can read, modify, or interrupt resources assigned to another tenant.

CVSS severity5.3
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Diboot 3.8.0 allows remote authenticated users to cross tenant boundaries through its administrator API. The /admin/ Tenant Administrator Management API accepts a caller-supplied tenantId without verifying that the authenticated account is authorized for the referenced tenant. Low-privilege API access is required, after which requests can read, modify, or interrupt resources assigned to another tenant.

The record

CVE
CVE-2026-82817
Published
Aug 31, 2026
Updated
Sep 2, 2026
Vendor
Diboot
Product
Diboot
Classifications
CWE-266, CWE-284, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Diboot · Dibootversion=3.8.0

Published CVSS scores

5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.3VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
CWE-284Improper Access Control
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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